package demo3;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: Home-pc
 * Date: 2023-08-16
 * Time: 15:28
 */
public class Computer {
    public void open(){
        System.out.println("打开电脑");
    }
    public void close(){
        System.out.println("关闭电脑");
    }

    public void useDevice(USB usb){
        usb.openDevice();
        if(usb instanceof KeyBoard){
            KeyBoard keyBoard=(KeyBoard)usb;
            keyBoard.input();
        }
        if(usb instanceof Mouse){
            Mouse mouse=(Mouse)usb;
            mouse.click();
        }
        usb.closeDevice();
    }

    public static void main(String[] args) {
        Computer computer=new Computer();
        computer.useDevice(new KeyBoard());
        System.out.println("-------------------");
        computer.useDevice(new Mouse());
    }
}
